I suppose it's a matter of opinion. But I will say this... I've been a software developer for nearly 20 years, and if I produced software with as many bugs as Excel has, I'd be working in a nail salon right now.
Can you be specific about what bugs? I've been using excel extensively for 10+ years and its the best software application MS has ever produced.
Fair enough. I hated back in the 90's how communication and functions between the Microsoft wasn't even close to seamless, but Excel itself did everything I wanted it to do and did it right. I guess I wasn't sharp enough or using enough super-advanced features to catch the glitches.